Here's some eyelash brushes that I made. There are 4 pairs (top and bottom lashes). Made them with Adobe Photoshop CS3, not sure if they will work with other versions of Photoshop.

People have asked me why there is only one side of lashes. Well, you don't necessarily need both sides. Of course that is more convenient, but if you know how to use photoshop, then you should know that you can transform the lashes and flip them horizontally or rotate them.